(a) Scheme of the experimental setup together with the photograph of an argon plasma jet. (b) Simulated field enhancement effect at the end of the coaxial structure.
OES spectrum of an Ar plasma flowing into an air atmosphere, showing no traces of nitrogen or oxygen compounds. A comparison with an mixture is presented.
(a) OH rotational band structure for Ar and He plasmas (normalized profile). A comparison with some synthetic spectra is presented in the inset figure. (b) Gas temperature at a distance of from the end of the coaxial structure as a function of the nominal rf power.
Current and voltage wave forms for different rms currents: (A) , (B) , (C) , and (D) .
Electrical performance of He microplasmas: (a) characteristics and absorbed power. (b) Impedance of the discharge .
Electrical performance of Ar microplasmas: (a) characteristics and absorbed power. (b) Impedance of the discharge .
Top: OES spectra of and discharges for identical precursor concentrations ; bottom: fine structure of selected CH and bands.
Intensities of selected species detected by OES as a function of the amount of precursor in the discharge: (a) mixtures; (b) mixtures.
intensity ratio in and plasmas as a function of the precursor amount.
Main features of OES Spectra in and mixtures.
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